Swivel coupling



Dec. 31,` 1935.

SWIVEL OUPLING Filed April so, 1954 s. GUARNAscl-IELLI 2,026,167

Patented Dec. 31, 1935 UNITED STATES 'SWIVEL COUPLING Stephen Guarnaschelli,

to Packless Metal Pr York, N. Y.,

Application April 30,

1 claim. l

This invention relates to swivel couplings.

More particularly stated, the invention relates to a swivel coupling adapted for connecting and establishing communication between two pipe 6 sections or conduits.

Swivel couplings for pipes or conduits are common and are used in many fields. Most of the couplings now in use have packings therein to prevent leakage between the relativelyA movable parts of the coupling. This is objectionable since the relative swiveling movement tends to wear and displace the packings, thus rendering them ineffective.

'Ihis invention has for its `salient object toV provide a swivel coupling that is simple in con-v struction, comprises few parts, is substantially leak-proof and accomplishes this result without the use of packing.

Further objects of the invention will appear from the following specification taken in connection with the drawing which forms a part of this application, and in which Fig. 1 is an elevational view of the coupling constructed in accordance with the invention; and

Fig. 2 is a longitudinal sectional elevation of the coupling shown in Fig. l.

lThe invention briey described consists of a swivel coupling comprising a pair ofA coupling members and a-sleeve disposed within these members and extending substantially' throughout the lengths thereof.- The sleeve is referably held against movement relative to e member and seats against the outer end gf/ the other-member. The spring is housed thin the coupling members and forces them/ n opposite directions causing the end of the sleeve toseat tightly against the coupling member engaged thereby.

Moreover, when the two coupling members are coupled into a pressure line, the pressure in the line tends to pull the lmembers apart and to seat the ends of the members tightly against the ends of the sleeve without requiring the use of the spring to seat the end of the coupling member not secured to the sleeve.

Further details of the invention will appear from the following description.

In the particular embodiment of the invention illustrated in the drawing. the coupling comprises a pair of coupling members III and II, each y member having agthreaded portion I2 at one end and an enlarged recessed portion I3 at the other end, the portions I3 being disposed in telescoping or overlapping relation, as shown at I 4.

A sleeve I5 is mounted in the coupling sections I and II and extends substantially therethrough, one end of the sleeve, as shown at I8, being preferably secured to one of the coupling members, such as member II. A slight clear- Brooklyn, N. Y., assignor oducts Corporation, New

a corporation of Delaware 1934, serai No, '123,086 (ci. ass-1) ance, as shown at Il, is provided between the other end of the sleeve I and the coupling member I I1 andthe outer end` of this portion of the `sleeve is provided with an outwardly inclined conical seat I8. coupling member I0 is provided with a conical seat I9 tapered to correspond with the conical end I8.

A spring is housed in the recesses in the portions I3, I3 and bears at its ends against thrust 1o washers 2|, 2| the spring exerting pressure on the coupling members I l) and II in opposite directions and. causing the outwardly inclined conical end I il of the sleeve I5 and the conical seat I 9 in the outer end of the coupling II to be forced into tight engagement with each other.

The two coupling members I 0 and II with the spring 20 and washers 2| 2| therein are first assembled and are h eld in position to compress the spring 20. The sleeve I5 is then inserted in the 20 coupling members Vand is held in position with the end I8 ofthe sleeve seating tightly against the conical seat I9. The other end of the sleeve is then expanded or forced outwardly into tight engagement with the bore of the coupling mem 25 ber II and the end oi' the sleeve is flared outwardly against the conical seat in the outer end of the member II. l

The swivel coupling above described may be used to connect any forms of conduits or pipes, these parts being threaded onto the outer ends of the coupling. It will be obvious from the above description that the coupling will beleakproof and that no packings are required to ac complish this result.

Although one specific embodiment of the invention has been particularly shown and described, it will be understood that the invention is capable of modification and that changes in the construction and in the arrangement of the various cooperating parts may be made without departing from the spirit or scope of the invention, as expressed in the following claim.

What I claim is: I A swivel coupling comprising a pair of mem- 45 bers having overlapping, recessed, inner portions d having elongated outer bearing portions, a sleeve disposed within and extending substantially through said members and closely surrounded by said outer bearing portions, said sleeve 50 having a cylindrical outer surface of substantially uniform diameter throughout its length and having outwardly inclined ends engaging the ends of the members, and a spring housed within and acting on the coupling members and forcing them in opposite directions thus causing the ends of the members to seat against the inclined ends of the sleeve.

STEPHEN GUARNABCHELLI.

The coresponding end of the 5 

